SNAKE − AB EAGLE ROCK NR IDAHO FALLS (SIFI1)
   State:  Idaho
   County:  Bonneville
   Latitude:  43 36' 16" North
   Longitude:  112 3' 30" West
   Elevation:  4730 ft

   Supporting NWS Forecast Office: WFO Pocatello

   
Click for NWS Official River Forecasts for SIFI1
   


   Action Stage:  
12.6 ft
   Flood Stage:  
13.2 ft
Daily Historical Statistics for July 21, 2026
Mean Stage: 8.42 ft  Mean Flow: 7930 cfs
Max Stage: 12.44 ft  Max Flow: 20600 cfs (2011)
Min Stage:  7.27 ft   Min Flow: 5230 cfs (2001)

Statistics based on water years: 1988-2024
* statistics estimated based on current rating

Record Stage: 
18.91 ft

The 4-10 Day Trend Forecast is based on model guidance and uncertainty during this period is greater.

Hydrograph plot for SIFI1

Data Used In Plot   "label   USGS Observations